Power typewriter



June 5, 1928.

1,672,354 o. TYBERG v POWER TYPEWRITER` y d M 6, 1925 '7 Sheet -She 254 289 ',Flgafch 1g. l

- -o m ,ik n

June 5, 1928.

O. TYBERG POWER TYPEWRITER Filed March 6, 1925 7 Sheets-Sheet 2 INVENTOH June 5, 1928. 1,672,354

o. TYBERG vPOWER TYPEWRITER med March 6, 1925 "I ,sheets-sheet s' I l .....w .I lll 11.

June 5, 1928.

O. TYBERG POWER TYPEWRITER v'I sheets-sheet 4 INVENTOR June 5, u1928.

o. TYBERG POWER TYPEWRITER 7 Sheets-Sheet 5 Filed March 6'. 1925 June 5, 1928.- 1,672,354

o. TYBERG POWER TYPEWRITER Filed Mann 6, 1925 47 sheets-sheet e INVENTOR June 5, 1928. 1,672,354

O. TYBERG POWER TYPEWHITER Filed March 6, 1925 7 Sheets-Sheet '7 INVENTOR l Patented June 1928. i V

kUNITED S'I'ATESv OLUF TYBEBG, F POINT LMA, CALIFORNIA.

POWER mnnwnrrnn.

pplica/ton .Med 'Marek 1985.. Seriali No. 13,6113.

This invention Yrelates to power typewritfers and similar machines and consists of an improved carriage construction, of new-and useful mechanisms for operating the 'carriage, and for controlling these mechanisms from-the keyboard. rIhe objects of the invention is to make the. carria e motions sim- 4ple and durable, and to faci itate the work of the operator iny the manipulationr` of the.

v 2o is made to strike againsta stationary platen.v

On this rotary carrier 1s also mounted an armed sleeve (19)- normally revolving with it, but capable of being intermittently arrested at different points of the rotation, and

' when so arrested, it transmits a motion to a rockshaft (80) by means of plunger (29) situated in the rotary carrier. This rockshaft, which is mounted on the frame of the machine is adapted to operate three distinctly separate mechanisms, namely (1) the printing mechanism "that causes the typecarrier to strike the platen, and which has been more fully disclosed in my application Ser. No. 4,938-iled J an; 26, 1925, and' merely out- The carriage spacing mechanism, and 3) the paper Ime-feed mechanism. In addition my invention embodies -an independentmechanism for returning the carriage by a running motion to be operated in connection with the above referred to line-feed mechanism, Iand which discloses new and .-useful features for lock-stopping the -carriage accurately and -without jar at the end of its return andalfso means for. regulating the amount of line-feedin i Other features disclosed in my vdrawings will be more fully dealt with in the following specification', and the invention accordingly consists of the `features of construction,

combinations of elements and arrangements of parts, which will -now be described in detail on reference to the'following drawings. In the accompanying drawings, consisting of seven sheets, Fig. 1` is a side elevation lined in the accompanying drawings. g2)y -ofl the machine and a center section on thelines' A-A of. Figs. 6 and 12. Fi 2 is a rtion of the-same view, showing t e print# ing release motionin action. Flg. 3 1s another side elevation, sectioned on the line 00 B-B of Fig. 6, Fig. 4 is a left hand end view of the carriage frame, showing the paper feed mechanism. Fig. 5 is .a front view of the same, partially sectioned. Fig. 6 is a.: front section ofthe machine on the line C-C 66 of Fig. 1. Fig. 7 is an end view of the right hand portion of the carriage frame. Figs.l 8 and 9V are detail views of lthe tabulator.

Fig. 10 isa front view of the keyboard. Fig.

11 1s' afpartial end view of thekeyboard, par- 70 tially sectioned on the line D-D of Fig. 10. Fig. 12 is a top view of' the keyboard. Fig. 13 is a top View of a portion of the carriage frame, showing partspf the Icarnage 'reverse mechanism. Fig. 14 is a top view of plate 6, 76

showing the carriage vfeed mechanism, and Figs. 15 and 16 show this feed mechanismin different active'positions. Fig. 17 shows the feed control shaft andthe plate 6y in section on the line E-E of Fig. 14. Figl@ is a top 80 view of the machine below plate 6, and Fig. 19 is a ,rear View of the machine, showing parts of the carriage return mechanism.

The frame maybe constructed in any suitable manner. Referring to Fig. l, it cone5 sists of a base plate 1, upon which is mount-l edthe casing 2. On the top of casing 2 is mounted ,the plate 4, to the lower side of which the pawl case is fastened. 'Ilhis pawl case and its parts are similarfinfconno struction to the one shown and1 described in my applicationzeqser. No. 4938, except, in place of spiralsprings, I havev substituted the fiat springs and 53 for controlling the actions of the stop-pawls 41 and the reas lease-pawls 51.

The keyboard frame yis a front extension -of the casing2, and the keyboard is dividedA into three sections The two end-sections 104 and 106 ycontain the character keys, 100 which act upon ythe keylevers 100, pivoted at 101, and -are heldin their normal position by their respective spring-actuated release pawls 51. In the center-section'105 are situated the control-keys.

Like vthe character- 105. keys the number of control-keys may be vapivotedat 118, and held by their respective strmgactionsI in a normal position against the underside of a plate 119, fastened to the top of the front portion of section 105. This motion of the plunger 29 and the typewheel' shaft`62-isidentieal with that shown in my previous applications .above referred to, as is also the .flexible typewheel shaftl and the manner/ of producing the printing impact against the stationary platen. The only addition to this rotary carrier is a friction band 23, attached to its outer rim, for supplying the power for the quick return of the carriage, tov which references will be made hereinafter.

On plate 4 is mounted a front (anglefpiece 5 and a rear angle-piece 5b, which toeether support the plate 6. On the underside of platev 6 is Vsituated the actuatinfr rockshaft 80, mounted between lugs 81. Figs. 3, 14

. and 17.) The arm,82v of this rockshaftis provided with a roller 83, resting on the cap 30 of plunger 29, and from which .the

" actuating rockshaft 80 receives its motion as already explained in my prior applications. The other three arms 87, 91 and 95 on this actuating rockshaft will each be referred to hereinafter. Y

The plate 6 is provided with two uprights 7a and 7". To the top of these uprights is fastenedthe plate 8, rovided with a pair of uprights 9 and 10, Figs. 1, 3 andv 10) in which the printing mechanism is situated. This printing mechanism may be constructed in any suitable manner, and is here shown as a simplified form of the construction embodied in my application :-Ser.y No.4938. A pair of interacting rockshafts 144 and -152 are both mounted in the uprights 9 and 10. Roekshaft 144 is connected to the hinged bearing 140, that supports the typewheelshaft 62, and is operated by the rockshaft 152, which in turn receives its motion frbm the arm 87 of the rockshaft 80, throu Yh the spring-actuated pawl 88. This pawl 1s no1'- mally held in position to be gripped by the arm 87. but may he disconnected therefrom at the will of the operator, as will be shown hereinafter. v

The shiftmechanism may be constructed in any suitable manner. Referringr to Figs. f und 10. it. consists of a rockshaft 1l l, mounted between lugs 110, situated on the underside of plate 8. This rock-shaft carries an arm 1,12, provided with a roller 113, made tof bear against the lower side of flange 63 on the typewheel shaft 62. Another arm 115 en this yrockshaft is connected by rod 116 to the shift keylever 134, which, while depressed, keeps the lower row of types in line with the impression block 235.

The carriage support may be constructed vin any suitable manner. In my preferred construction it consists of a carriage-frame y200 in the shape of an angle-piece, that rests .pression block the printing .is done as described in my application z-Ser. No. 4938.

In this earlier application attention was called to vdistinct improvements which the introduction of a stationary platen makes possible.y In addition to those mentioned there, it should be noted here, that the use of a stationary platen reduces the carriage to a paper support, whose movements lend themselves to be controlled by mechanisms of simpler and more'durable construction.

This advantaee is of a ,articular im ortance in a power typewriter, where the demands upon the carriage operating mechanisms become mo-re exacting, 1f all the carriage motions have to be controlled directly from the keyboard, such as is provided for in this typewriter. The object of this form of a carriage-frame is to provide an upright rectangular frame, inside of which the carriage is supported in such a manner as to make its construction simple, its support rigid, and its manipulation more universal. Besides this construction makes it possilfe to provide stationary handles, mounted upon the two ends of the carriag ,refran1eitself,` for feeding and releasing the paper on the carriage by lou hand, the advantage of which will become apparent, when the machine is used in connection with a permanent hood or cover, such as is disclosed in my application for typewriter accessories Ser. No. 13,612 bearing even date with this application.

"While the construction of the carriage itself may be varied in details, my preferred construction in as follows. The main feed- `roller 271 is provided lwith suitable end-bearings (Figs. 3 and 6) that permit it to slide freely on a feed-rod 260, supported in the two endrbrackets 231 and 232. At each endV of the feed Vroller 271 a shoulder has been turned, upouwhich' 1s mounted the carriage proper. This carriage consists of two endpieces 240, fitted to swing freely on the two shoulders of the fecd-rol1er 271. The two end-pieces are connected by a tie rod 242, by two feed-racks 243 and 244 fastened to the bott-om of the end-pieces, and by a marginal stop support 284, fastened to the front of thel same. Between the two feed-racks is siturack in working /contact with this feedkeylever 269,

pinion. The object of this carriage construction is to bring this direction under direct 'control of the operator ina manner now to be explained.

' The swingnig actiouof the carriage is controlled by twoy rollers 204 and 205. These rollersl straddle the two feed-racks and are mounted on a flut har 206, fitted to slide in ay correspom'ling' I: vroove in the top of the carriage frame 200. The flat liar 206 is eontrolled by a forked lever 225, (Fig. l) Whose other end is conuectedby link 226to another lever 227.- A spring 22S keeps lever 22T against. the stop 229, and therefor-normally keepsI the 'feed-rack 244 in contact with the pinion 224,' which makes the carriage feed forward. Extendinglr through an opening' in the carriage frame is an arm 258, which bears against the other end-of lever 22T. so as to move it, and through this motion-indicated-by broken lines-pushes the flat bar 206 back. This action disengages the feed-rack 244 and brings the feed-rack 243 into engagement with the feed-pinion, and causes the'carriageto feed backward.

The arm 258 (Figs. 3, 6 and14) is mounted between lugs 262 on the underside of plate 6,.:ind is connected by rod 263 to an arm 264 of a rockshaft 265, mounted in lugs 266 on the rear of the angle piece 5a. (Figs. 3 and 10.) Another arm 267 of rockshaft 265 con' nects by rod 268 Ato the reverse control which while depressed makes the machine feed and print backward.

The manner of supportingr the paper on follows. .Fastened to the top of the two feed-racks 243 and 244 are two brackets 246, in each of which are freely mounted a pair of spring-actuated arms 249 and 250, (Figs. 1, 6 and 7 whose free ends respectively support the two pressure rollers 272 and 273. A paper guide 254 for insel-tmpr the p aper and for guiding it around the feed roller271 fastened 'to the two end-pieces 240. Mounted inthe rear of the twol end-uprights 231 and 232 is a ivineged rod 207. extending the full length of the carriage travel. This lod is provided with a handle 208, fastened to the ri ght hand end. and which when turned makes the winged portion of the rod 207 push against the curved extensionsv251 ofthe arm 250, This action forces the pressure roller 273 away from the feed-roller.-271, while this motion/.lof tl arms 250 causes asimilar niotonto'the arms 249 through the interaction :off their respective shoes 252. Hence the paper can be released in any position of theearriage by the stationary handle situ.-

lated at the' end of the carriage frame.

The paper line-feed may be constructed disengaging the feed motion,

mounted in a spring-actuated arm 213, keeps' the feed-rod normally spring locked, A

hand, or automatically by p spring-actuated pawl 215, situated on a swingiiig arm 216. loosely mounted on the feed-rod. is titted to engage the teeth in the wheel 211. The motion of the arm 216 is controlled by the rod 218,- the lower end of which is connected to the arm 220 of a spring actuated. feed-shaft 221, mounted inthe rear of the carriage frame 200.` The other end .of this feed-shaft is provided with an arm 222, (Figs. 3 and 6) which forks a pin 280, fastened in an arm 281,.'and this arm is mounted in lugs 262, on the underside of plate 6, side by side with the arm-258already described.

-To the arm 281 is pivoted a' pawl 282, whose free end is yprovided with a slot, in which works a pin, fastened in an arm 361, belongingto the line-feed control sleeve 360, to be referred to hereinafter. The arm 361 keeps the pawl 282 normally out of contact with the projection 94, 'on the arm 91 of the actuating rockshaft. But when the control sleeve moves', itvpermits the pawl ,282'to engage the projection 94, and eaehmotion of the rockshaft will thencause the paper 1n the carriage to be fedv an amount corresponding to one tooth4 of the ratchet-wheel.

It should be understood that while the line-feed here described only feeds the paper in one, direction, some slight modifications and additions, such as intermediate gearing, with means for controlling the vsame and of well known construction, movement here described possible of feeding tho'paper automatically in either directlon.

The carriage-feed may be constructed in any suitable manner, and either a springaetuated escapelne-nt or a positive feed may be utilized for the purpose.l ln my preferred construction l use a. positive feed, in connection with which l. introduce some new and useful improvements for locking and -of which the following is a. description.

A ratchet-wheel 330, provided with square teeth, is fastened to a feed-shaft 331, mount- (Fgs. 1 and 14.) To the upper end.

would make the scribed. Directly above the ratchet wheel 330, and loosely mounted upon the feedshaft, is the feed-plate `333, provided with a spring-actuated feed-pawl 334, that engages the square teeth. The feed-plate 333 is connected by. rod 336 to the arm 338 of a springactuaied lever, centered at 337, whose other arm 339 connects, by rod 340, with the arm 91 of the actuating rockshaft 80. (See also 'Figz 3.) This positive connection between to move forward, this cam-face is withdrawn from under the roller, and permits the lockpa-wl to enter the teeth. This prevents overthrow and positively locks the ratchet wheel between the lock-pawl and the retainingpawl, long enough for the printing to take place. This locked position is shown in Fig. 15. Only as the feed-plate returns .to its normal position of 'rest is the lock-pawl again withdrawn from the teeth by th action of the cam-face.

From the above descriptions it should now be understood that each time the actuating rockshaft 80 moves, it normally operates the carriage-feed and the printing mechanism, but not the paper line-feed. In order to make the actuating rockshaft operate the line feed as well as spacing and feeding continuously the carriage wit-hout printing, I introduce a control mechanism consisting of three units, directly connected with the keyboard. and capable of acting either independently or together.

This control mechanism may be construct-4 ed in any suitable manner, but preferably it consists of a space control-plate 346, 14) mounted on plate 6, centered at 348, and connected by rod 353 to the arm 354 of a control-shaft 355. T his control-shaft is mounted on centers 356, situated in the uprights 7a and 7b. Between shoulders on this control-shaft is loosely mounted the line feed control-sleeve 360 and the printing controlsleeve 370. They are shown in section in Fig. 17. The space control-plate 346 is normally inactive, .but when moved into active position, as shown in Fig. 16, it makes the carriage 'feed inactive, for its arm 347 is so shaped as to bear against the tail-end of the feed-pawl 334 and to keep it from entering the teeth, while another arm of plate 346 engagesl the tail 345 of the retaining-pawl 341', and keeps this pawl out of contact with the teeth. Fig. 16 alsov shows I ,the carriage feed becomes inactive, and bes-ides the feed shaft 331 is free to move in both directions, permitting the introduction of an independent carriage return motion to be explained hereinafter.

The two control-sleeves 360 and 370 are loosely mounted on `the coutrol-shaft 355. Figs. 1, 14 and 17show how these sleeves are respectively connected to the controlshaft by their pins .366 and 376. Pin 366 bears normally against the side of project-ion 367 and pin 376 bears normally against the opposite side'of the corresponding projection 377; both these projections are firmly attached to the control-shaft. The sleeve 360 is provided with an arm 361. which, as has already been explained, controls the linefeed pawl 282, and keeps it normally out of engagement with the rockshaft 80. The sleeve 37 0 has a downward projecting arm 371, against which rests the pawl 88, that y connects the rocksliaft A8() with the printing mechanism. In another arm 372 of this sleeve is pivote'd two .paw-ls 37 4, and 384. These two pawls are guided in a lplate 413,

fastened below plate 6, while two flat springs 375 keep both these pawls and the sleeve itself in their normal position shown in Fig. 1.

The spacing mechanism in this machine consists of a key, which disengages the printing mechanism at the same time as it performs the action of a regular impulse key, which is that-of causing the `actuating rockshaft to move once, by releasing a corresponding stop-pawl, in the manner explained 1n my prior application. The space key is attached to the control keylever 410, and is shown in Figs. 1, 10, 11 and 12. InFig. 11 this key-lever is shown resting on a plunger 411, which in turn rests upon one of the impulse keylevers 100. In Figs. 1 and 10 this keylever is shown connected by rod 412 to an arm 414 of a. springactuated lever, pivoted at 415 on the front upright 5a. The other bent arm 416 of this lever rests directly beneath the pawl 374.

vWhen the space key is depressed, the arm mechanism remains active. makethe space key automatically selfrestoring like the printing keys, as explained in prior applications, the following .construction is introduced. Connected to rockshaft 80is` an arm 95, (Figs. land 14) towhich is pivoted a pawl'97. Thezfree rend of-ths pawl lrests on' the plate 413, and moves in the same vertical plane as the pawl 374. Normally the pawl 97 moves back and forth with the motion of the rockshaft 80 without touching the pawl 374, but when the space key is depressed and the arm 416 has lifted the pawl 374, its shoulder 38(7 enters the path of the moving pawl 97, and pushes it out of contact with the arm 416,' as shown in Fig. -2. This automatically restores the vcontrol-sleeve 370 to its normal position,

and makes the printing mechanism operative whether the finger remains on the space -key or not.

The-contlnuous feed mechanism is as follows. Next tothe space key is the feed key, mountedon keylever 420. J (Figs. 1, 10 and 12). This keylever is connected by rod 422 to the arm 424 of a second lever, pivoted at 415, whose other arm 426 is fitted to lengage thesecond pawl 384, mounted in the control-sleeve 370. A pin 421, on the con# necting rod 422 is straddled by an arm 427 ofa trippingelever, pivoted at 425, whose other bent arm'428 rests beneath an extension 49 of Aone of the stop-pawls 41. When Y the feed key is depressed it permanently unhooks the stop-pawl to which belongs this j l n extension, for this manner of unhooklngv a stop-pawl prevents it from assuming its nor- ,rotary carrier 13, which otherwise is one o mal hooked position of rest, when pushed back by the eccentric motion of the armed sleeve 19, after one single revolution of 4the keeping it'- d epressed while manipulating either the space key or the feed key, is to cause corresponding backward movements .ofthe carriage, ust as the manipulation of 'the printing keys-with the reverse conv trol key depressed-causes the machine to print backward. l

It should "also bel understood that by adding anextention 49, such as has been described, to other stop-pawls, such as Control the printing'of certain signs or Characters, and by means of separate keyleve-rs for manipulating them, it is possible to'print any such signs or characters'continuous1y.

In order t0 (MAS the carriage-feed is positive in both directions, an automatic and adjustable margixtal stop motion isprovided for positively arresting the carriage feed and rinting. at both ends of the line; In my pre erred construction the general arrangement of this stop-mechanism is as follows. Mounted 'on the front of the carriage-frame 200, and di-A rectly above the control-plate 346 :as shown in Fig; 6 is a bell crank, centered at 450. Its downwardly projecting arm 451 bears dif re'ctly against an arm 349 of the control plate 346.-v (Fig. 14.) Another arm 452 straddles a pin on the arm 462 of another bell-crank, loosely mounted on a shaft 460.

The shaft 460 will be referred to hereinafterl in connectionwith the carriage return motion. Mounted on the marginal stop-support 284 of the carriave are two adjustable marginal sto s 285 and 295. They are constructe'd to slide on the support aid are'provided with spring-actuated pawls 286 and 296, that lit the teeth in the support, so that these stops can be locked in different ositions, and thus determine the length o the line to be printed. -These marginal stops arel provided with downwardly projecting shoes 287 andi297, as well as 'upwardly L- shaped-extensions 288 and 298.

the paper after it eaves-the ed rollers, are so proportioned tat their inner edges 289 and l299 become ldefinite indicators, showing the exact positions of the two printing margms directly upon the paper itself. When the carriage, in its forward motion reaches These extensions, which besides acting as guides for the end of the line, as determined by the position of the marginal stop, the shoe 287 on this stop will have reached the arm 454 of the bell-crank, centered at 450, and" when f striking it, cause its lower arm 451 to push the control-plate 346 into'the position shown in Fig. 16. This disengages the carriage feed mechanism as already explained. l3nt.

it also Vdisconnects the printing mechanism,

-for the motion of the `control-plate also moves the 'control-shaft 355 through the ro'd 353. This causes the projection 377 von the control shaft, acting on thepin 376, to move the control-sleeve 370, and to disengage the printing mechanism. When now either' a printing (key or the space key is struck, the motion of the actuatingrockshaft 80 will have no effect until the carriagehas been returnedto the beginning of a new line. When the carriage is fed backward, and the left-hand margin isl reached, the shoe 297 on' the.margina1stop 295 strikes the upwardly extending arm 464tof the bell crank that is centered at 460. Its connection with the otherbell crank, as already explained, simvilarly disengages both the spacing ,and the printing mechanism.

The tabulator lis operated ositvely by the depression'of the feed ey, and the a detachable piece,

means for adjusting it are all conveniently situated -in the front of the machine. Its detailed construction may be varied, but preferably it is as follows. Mounted on the front part of the carriage-frame 200, (Figs. 6 and 7) are two lugs 431 and 432, in which is mounted the -tabulator shaft 433. This shaft is free to turn and yto move endwise in the lugs, and it is provided with two arms 435, that support the twoends of a rack 437. Two shoes 438 (the number of shoes may be varied to suit requirements) are slidinglyimounted on shaft433. Each of these shoes(Figs. 8 and 9) is provided\ n with a. spring-actuated pawl 440, whose up'- rightl portion is made to enter the teeth. of the rack, and lock the shoes in any desired position on the rack'. The tabulator-shaft 433 extends out beyond the lug 431, and

..2 close up to the bell-crank arm 454. To this extension is attached an arm 445, while opposite the lug 431, is a spring 434 for controlling the shaft tortionally as well as endwise. It therefor keeps the tabulator-shaft normally away from the arm 454, and at the vsame time keeps the arm 445 normally restingagainst the arm 448 of a lever, mounted at 447 in the upri ht 7b. The lower arm 449l of this lever, (Fig. 6) is connected by 'rod 418 to a thir arm 417 of the lever mounted at 415, which connects. with the feed keylever 420, as already described. The pawls inthe shoes 438 extend up above the rack, and their ends 441, when the tabulator is in its normal position, just clear the path of a projection 241 on the carriage. This .projection is here shown as forming part of the end-piece 240, but may be'madea capable of being swung out of the way when the tabulator 1s not in `use. Whentdepressing the feed key, the

connection just described, causes the tabulator to swing. abouton its own axis and to bring the pawl ends 441 'into the path of `the projection 241. `As theparriage now proceeds forward by the action of the continuous feed, the rojection 241 will strike the first pawl, andP force the tabulator-shaft to push against the arm 454 'of the bellcrank that makes the feed mechanism ino erative. The removal of the fingerv from t e feed key at ,once releases the tabulator. from the projection 241, and makes the'feedmechanism again active, so that a renewed depression of the feed key ermits the carnage to roceed again unti the next stop on'the ta ulator is reached, andso forth.

The means for independently operating the paper line-feed directly yfrom the keyboard are as follows. As already explained the control-sleeve 360 keeps the line-feed `mechanism normally 4inactive by holding t-he pawl 282 out of contact with .projection 94 on the actuating rockshaft 80.- (Fig. v 3.) The control-sleeve 360 has a downward extending arm 362, the slotted endof which straddles a pin 517, fastened to an arm 516 of a rockshaft 515, mounted in lugs 513, situated on the upright 5a. Another arm of this rockshaft is connected to a plate 505 by means of the rod 506. Plate 505 is pivoted at 118 together with the control keylevers. On. each side of plate 505 (see Figs. l and 12) and resting on a pin 507, inserted through the plate, are two control keylevers 510 and 520. -The left-hand lever 510 has a key marked return and will be referred to hereinafter, `while the right-hand' .keylever 520 has la key markedfpaper control. When this latter key is depressed, it pushes the plate 505 down with it. This causes the control-sleeve 360 to move and to permit the pawl 282 to enter the path of the projection that whenever the .paper control key is depressed, the additional depression of the space key will cause the actuating rockshaft v80 to move once, and cause the paper to be fed forward an'. amount corresponding to one tooth of the ratchet wheel 211. If instead, the feed key had been depressed, the rockshaft 80 will continue to move, and continue to feed the paper in the carriage'. In either case the carriage itself will remain staionary in whichever position it happens to e. 5

From the foregoing it will now be understood that'I employ three distinct and independent mechanisms for spacing, printing and feeding the paper, but all operated from the same source, namely thel actuating rockshaft; and in addition to these a control for making each and all of 4these mechanisms inactive, and capable of being operated either by the motion of the 'carrlage or directly from the keyboard. This control is capable of assuming the following distinct positions.

(1) The normalposition in which the con trol keeps the spacing and the printing mech-v an-isms'active and the line-feed inactive.

(2) The position obtained, when the end of the line is reached and the carriage opcrates the control, and all three mechanisms become inactive. 1

(3) The osition obtained by depressing either the space ke when the line-feed an printing mechanisms .become inactive, and only the spacing mech ani'sm acti-ve.

A 353) to v move. It should therefore be understood4 or the feed key,

(4) The4 posifionsobtained' by deprtainf;r

ferred construction it is as follows. in ed in a. pair 'ofzlugs 531,"situated on the front "Iside vof the'lrear upright 5b is a frictionframe (Figs. 1, 3, 6 and 12') consisting of two bearings 522 and 523 connected by two tie-rods 525 and 526. Mountedin thesebearings and situated directly below and in line with the 4feedfshafg 331, is a friction-sha 527, to the lower end of which is fastened the friction-wheel 529. This friction-wheel is situated in close proximity and opposite to a friction-band 23,'secured to the rotary carrier 13. A spring 536 keeps the friction-` vframe resting against a stop 532, and thus keeps the friction `wheel Anormally out of contact'with the friction-band. As the shaft 527 is situated ina movable frame, and has Ito revolve with the feed-shaft 331, these two shafts are connected by means of a pinclutch, consisting of an arm 533, fastened to Aendl of the friction-shaft-527.

Aof operating the friction-frame is as follows.

the lower end of the feed-shaft 331, and provided'with a pin 534, that fits the groove in another arm 535,fastened to the upper The manner Mounted between lugs 545, also situated on the upright 5"., is val rockshaft 546,v whose' one arm 547' supports a spring-actuated pawl 538, l

iitted to bear against a hook 524, situated o n an extension of the upper bearing`522 of the friction frame. The extreme end of arm 547 is connected by rod 518 to the axm 516 ofthe'rockshaft 515 in the upright i5", which asalready explained is controlled by the key A levers 510' and 520.4 The depression of either one o'fthese keylevers will operate the control 'as'already explained, and hence make the feed-shaft 331 free to -move in either di-- rection. But only the keylever 520, which is free to move further than thel keylever 510, is able to move the friction-frame sufficiently produce contact between the frictionwheel and the friction-band, and to cause the friction-shaft, throughv connections al ready described, to return the carriage quick lyY to the beginningofthe line.

In order that the carriage, when being re? turned by this quick return motion, shall sto always at the right'place without jar an while the return key is still depressed, I employ an automatic frictionrelease mechanism together with a speciallya constructed frictional locking device, both 'of which are operated by the marginal stop. While the' detailed ,arrangement of these two mecha-` nisns may be varied, 'in my preferred con` struction they are as follows.

The friti'onal release mechanism consists l of a shaft 460, mounted in the carriage frame 200, (Figs. 3, 6, 18 and 19). To the frontend .of thisshaft is attached a stop-arm 461 and to the rear end a cam-arm 462. The

stop-arm isin line with the marginal-stopshoe 297, and the camarm is made to act upon a pin 482 fastenedin theupper portion 481 of a. lever centered at'480`, on the rear of upright 5. The lower arm 485 of this lever is madetof push against a rear extension 537 of the pawl 538. This pawl has already been referredv to as controlling the action of the frictionframe, when-the rev turn key -is, depressed. As the carriage is being returnedA by the friction-wheel, the marginal stop 295 will hit the stop arm 461, and 1n moving it will cause the pawl 538 to be released from the friction-frame while the return key lis still depressed. But there is still the momentum of the carriage to be overcome, and .if this be attempted by meansof al solid stop, both jar and 'rebound would result. vToovercome this I introduce a frictional locking-device. l

The frictional locking device consists of asy a friction-shoe 491, (Figs. 18 and 19)v pivoted at 490 on the plate 4, and which while normally out of contact with friction-wheel 529, is so shaped as to be able to bear against it. At 495 on the rear upright 5", and di? rectly above this friction shoe, is mounted a lever, whose lower arm 494'1is made to actupon a rear extension 492 of the friction,- shoe, but normally, keptaway from it by the spring493. Pivoted at O, onthe upper portion 496 of this lever, is a double link 497. Its lower arm is connected atP to the'4 rear arm 549 of the rock shaft 546, by the vrod 498; while its' up er arm is connectedv at N to the arm 481 o the lever :centered at 480,' by the connecting rod 499. When the return key. is depressed, the rockshaft 546 is moved, and through its connecting rod -498 causes the double link 497 to assume the positionNv O2 P2, asv indicated by broken lines in Fig. 19. This moves the lever and brings its lower arm 494 closer to the friction shoe. As the carriage reaches the limit" ofv its return-,-L'and the friction has beenreleased,th efmomentum of the carriage continuesft move the, stop-arm 461. This causes thecam-arm 462 to move the arm 481.

.As this arm is-c'onliected to the upper end of.the.double link, it forces this link into the position N O*l P?, in vwhich position the lever`- vhas moved sufficient to force the friction-shoelagainst lthe friction-wheel, and tov stop and completely lock the carriage. But

as soon as the return key is released, the lower portion of the double link isagai'n 'permitted 'to return to its normal'position, and this at-once'releases the carriage, and

permits it to be s ced forward again.

AIn orderv to feedt e paper to the next line each time the carriage is being returned by isa the quick return motion, and also to be able to vary the space between4 the lines, I employ. the following preferred construction. ASituated on the front portion of the keyboard-section 105 is an arm 562, (Fig. 10)

pivoted at 563, whose upper portion` is so shaped-as to be acted upon only by the keylevery 510, when the "retuin" key' is depressed. The' end of arm 562'l rests upon another arm 564, pivoted on the hub of an adjustable arm 568. (Figs. l1 and l2.) This adjustable arm is mounted at, 569 on the keyboard-section 106, and its free end is provided with a lock-pin 570, which is made to fit either one of three holes 539, 549 and 541, drilled in the front of the keyboard, and

which permits the arm to assume either onel of three positions. Three of the impulse keylevers 100 have been extended out towards the front of the keyboard, and a projection' 565 on the underside of arm 564 is litted to rest on them, in order that either one, two or three levers may be acted upon atv once, according to the position of the arm 568; The position in the drawing .shows this arm in the middle position, and the arm 564 actingV upon two impulse keylevers. (It

should be understood that the number ofkeylevers and adjustable positions need not belimited torthree.) When the'return key is depressed', its keylever 510 pushes the .mechanismI for operating sai arm 562 and causes the arm 564 to depress the -number of keylevers it has been adjustedy toact upon. These keylevers release a corresponding number of stop-pawls 41, each of which inV turn causes,the actuating rock-y shaft to mo've once. vplace while the carriage is being returned,

As 'these motions take the control shaft is in position to keep the .spacing and the printing mechanisms inacf anism for bringing any selected vtype of said typewheel in contact with said platen, and keycontrolled power-driven means-for selectively operating any of said mechanisms. 2. In a typewriter the combination of a frame, a paper-carriage slidingly mounted upon a rodwhose ends are secured in said frame, a stationary platen mounted' upon said frame, a rotated typewheel, mechanism f or voperating said carriage, mechanism for line-feeding said paper, mechanism for bringing any selected type of said typewheel I' v in contact with said platen, and key-controlled. power-driven means for selectively operating any of said mechanisms.

3. In a typewriter the'combination oi.' a fra/ine, a revolving rod whose ends are secured in said frame, a paper-caerniage slidingly mounted' upon said revolving rod,r a stationary platen mounted upon said frame, a rotated typewheel, mechanism for operating said carriage, mechanism for lineeeding thepapeithrough saidrevolving rod, mechanism for bringing any. selected type of said typewlieel in contact with 'said platen, and key-controlledv power-driven means for selectively operatingany lof said mechanisms. i

4. In a typewriter the combination of a continuously rotated driver, -a key-controlled actuator intermittently operated by said driver, a printing mechanism, a carriagespacing mechanism, a paper line-feed mechanism, and key-controlled means ,for selectively causing said actuator to operatel any fof said mechanisms.

5. In a typewriter the combinationl of a I continuously rotated driver, a key-controlled actuator intermittently operated "by said driver, av paper-carriage mounted in a frame extending beyond the carriage travel, a sta tionary platen supported by said iframe, a printing mechanism, a carriage spacingmechanism, a paper line-feed mechanism,

and key-controlled means Vfor selectively eausing'said actuator to operate any of said mechanisms.

6. In a typewriter the combination of a continuously rotated driver, a paper-earriage, a typewheel, a type-selecting device, a printing mechanism, a carriage-spacing mechanism, a paper line-feed mechanism,

l andkey-controlled means fo'r selectively operating any of said mechanisms from said driver through said selecting device.

7. In a typewriter the .combination of a continuouslyv rotated driver, a typewheel and loll an armed sleeve independently mounted on. 1

said driver, key-controlled means for arresting the motion of said armed sleeve at different points of rotation, an actuator perated 4bysaid sleeve `while' arrested, a print-- ing mechanism, a carriage-spacing mechanism, paper linefeed mechanism, and keycontrolled means for selectively causing said actuatorv o operate any of'said mechanisms. 8. In a typewriter the combination of a continuously rotated driver, an actuator operatedby said driver, key-controlled means for making said actuator operate intermittently or continuouslyv,mechanisms for car-' riage-spacing and paper line-spacing operated Iby said actuator, and key-controlled means for selectively operating either of said mechanisms interniittently' or continuously 9.1m a typewriter the combination of a paper-carriage, ya power-driven carriage-return 'running mechanism, a paper line-feed to be operated a definite amount by each driven actuator, a return key turn key is depressed.

trolling said carriage-return and saidactuator, and means for regulating the number of motions of said actuatorpwhen` said re- 10. n a Atypewriter the combination of a continuously rotated driver, an actuator operated by said driver, key-controlled means for making said actuator operate intermittently or continuously, mechanism for linespacing operated by said actuator, a powerdriven carriage-return running mechanism, a return key for controlling said carriagereturn, and means for regulating the numbe of motions of said actuator when said return key is depressed. f

11. In a typewriter the combination of a power-driven printing mechanism controlled' from a keyboard by means of a series of key-levers, a paper-carriage, a power-driven line-spacer. al power-driven.l carriage-return running mechanism under control of a return key, means controlled by said return key for disengaging said key-levers from said printing mechanism and for making the depression of each of said key-.levers control the line-feed spacing.` l

12. In a typewriter the combination of a power-driven line-spacing mechanism underdirect key-control, a power-driven carriagereturn running mechanism controlled by a return key, adjustable connections interposed between. said return key and said line-spacing mechanism for operating said line-spacing during said carriage-return and for regulating the amount of line-spacing.

' 13. In a typewriter the combination of a continuously rotated driver, an actuator operated by'said driver, key-controlled means ormaking said actuator operate intermit- .tentlyv or continuously, mechanism for carriage-spacing andfor line-spacing operated by said actuator, a power-driven carriagereturn .running mechanism 'controlled by a return key, means for making said actu- 'ator operate said line-.spacing mechanism when said return key i's depressed, and a regulator for determining the number of intermittent motions to be made by y:said actuator. l

14. In a power-driven typewriter the combination of a carriage-return running mechanism, a paperv line-feed mecha.nism,a return key for controlling the motion of said mechanismsand a line-feed regulator situ- -ated upon the keyboard and connected with said return key.

15. In a typewriter the combination of a' power-driven key-controlled pawl and ratchet mechanism forfop'erating the linespacing, a power-driven key-controlled carriage-return running mechanism, a regulator for determining the number of ratchet mo- .tions to be imparted to saidr line-spacing mechanism during the return of said carriage, and eans for loperating said lines'pacing mechanism once or continuously -independent of said carriage-return motion.

16. In a typewriter the combination of a 'I0 continuously rotated driverfakey-controlled .actuator intermittently `loperated by said v either direction.

17. Claim 16 in combination'with key-controlled means for loperating said actuator continuously. v

18. Ina typewriter the combination o f a continuously rotated driver, a key-controlled actuator intermittently Voperated by said driver, a carriage provided with?` two feedracks, a spacing` mechanismincluding a pinion operated by said actuator, means vfor normally connecting said pinion with one ofsaid feed-racks, and key-controlled means for bringing said pinion in engagement with the other feed-rack.

19. 1n a typewriter the combination of a continuously. rotated driver, an actuator mounted upon and intermittently operated by said driver, and key-controlled mechanisms for letter-spacing and forline-spacing i to-be selectively operated by said actuator.

20. Inv a typewriter the combination of `a continuously lrotated driver, an actuator mounted upon and operated by said driver, key-controlled mechanisms for letter-spacing and for line-spacing to be selectively operated by said actuator, and key-controlled sol means for making said actuator operate once 122. In a typewriter the combination of a 11:5

continuously rotated driver, an actuator mounted/upon and intermittently operated by saiddriver, and key-controlled mechanisms for line-spacing and for spacing the carriage in either direction to be selectively operated by said actuator.

' 23. In a typewriter the combination of a continuously rotated vdriver, an 'actuator mounted upon and operated by said driver, key-controlled mechanisms for line-spacing and .for spacing the carriage in either d i-K rection to be `Vselectively operated by said actuator, 'and key-cntrolled means for n iakin said actuator operate once or continuous y.

llas

A stationary for making said actuator operate once orf continuously.

26. In a typewriter the combination of a platen. a carriage slidingly mounted upon a revolving rod, means for controlling the motion of said carriage. means for feeding thc. paper by revolving said rod.I and key-controlled power-driven mechanism for operating said means.

27. In a typewriter the combination of an open rectangulartrame. a revolvable rod mounted in the ends of said trame, a. feed roller mounted to slide upon and revolve with said rod. a paper-carriage for support! ing the pressure roller and for controlling the motion of saidteed-roller. a stationary platen supported by said trame, means tor printing against said platen. means for operatin'g said carriage. means tor revolving said rod, and key-controlled power-driven mechanism for operating said means.

28. In a typewriter the combination ot' a carriage provided with feed-rollers and mounted in a'framc extending beyond the ends of the carriage travel, a rod tor revolving said feed-rollers, means for releasing the paper in said feed-rollers, a handle for controlling said means. a handle for said rod, and both said handles mounted beyond the ends of said frame.

29. In a typewriter the combination of a revolvable rod. a` feed-roller mounted to slide upon and revolve with said rod. a paper-carriage comprising two end-pieces joined by a pair of {eed-racks and hung on said feed-roller, means for controlling the motions of said carriage through either one of said feed-racks, and means for controlling the motion of said revolvable rod.

30. In a typewriter the combination 'of stationary platen. mechanism for printing against said platen, a paper carriage slidingly mounted on a` revolvable rod and -provided with two feed-racks, mechanism for 'controlling the ymotions of said carriage through either one ot said feed-racks, a paper. line-feed mechanism operating through said rod, and keycontrolled power'- driven means for operating said mechanisms.

31. Ina typewriter the combination of a continuously rotated`driver and a key-controlled spacing mechanism operated by said driver. said spacing mechanism comprising a toothed wheel, a feed-pawl. a retaining. pawl` a lock-pawl working upon the side of the teeth opposite to that acted upon by said feed-pawl and normally out of engage-- ment with said teeth` and means for permitting said lock-pawl to enter said teeth during the forward motion of said feed-pawl for the purpose of prevent-ing overthrow.

ln a typewriter the combination of a continuously rotated driver and a key-controlled spacing-mechanism operated by said driver. said spacing mechanism comprising a ratchet-wheel provided with square teeth. a teed-pavvl, a retaining pawl, a lock-pawl working upon the side ot' the teeth opposite to that acted upon by said feed pawl. means for keeping said lock-pawl normally out of contact with said teeth except during the forward stroke of said feed-pawl.

33. vIn a typewriter the combination of a` continuously rotated drive-r and aX key-controlled spacing-mechanism operated by said driver. said spacing mechanism con'ipnisinga ratchet-wheel. a feed-pawl mounted upon. a 'movable arm` a retaining pawl, a. lockpawl. and a cam-face upon said movable arm which only permits said lock-paw] to enter said teeth during the forward motion of said eed-pawl.

34. In a typewriter the combination of a continuously rotated driver, al key-controlled actuator intermittently operated by said driver, a spacing mechanism comprising a 100 toothed wheel. a feed-pawl positively con nected to said actuator, a retainingepawl, a' lockpa\vl, and key-controlled means for keeping all said pawls out. of contact with said wheel during the motion of said ac- 105 tuator. l

In a typewriter the combination of a continuously rotated driver, a key-.controlled actuator intermittently operated by said driver. a spacing mechanism comprlsing a 110 toothed wheel. a 4feed-pawl positively connectedtosaid actuator, a. retaining-pa-wl. a lock-pawl normally out of engagement with said toothed 'wheel and acting upon the side ot the teeth opposite to that acted upon by 115 the feed-pawl, and means for permitting said lock-pawl to enter. said teeth during the forward motion of said feed-pawl.

36. Claim in'combination with key-con trolled means for keeping all said awls out 120 of contact with said Wheel during t e motion of said actuator.

37. In a typewriter the combination of a continuorsly rotated driver, a key-controlled actuator intermittently operated by 12s said driver, a-carriage, a force-feed mechanism for spacing saidcarriage in either direction by means of a single feed-pawl positively connected to said actuatonand adjustable marginal stops for making said lao feed-pawl inactive -at either end of the line duringy the motion of said-actuator. 38. In a typewriter the combination of a continuously rotated driver, anv actuator mounted' upon and operated by said driver, `a carriage-spacing mechanism operated by said actuator and controlled from a keyboard, and said keyboard containing a spacel key and a feed key which while l0 respectively depressed cause saidv spacing Jmechanism to produce single and continuous spacing. v

39. In a typewriter the combination of a keyboard-controlled power-driven carriagespacing mechanism, andv a keyboard containing a space key and a feed key for single, continuous spacing and afrever'se control key, and means whereby said reverse control key while depressed transforms said space and feed keys into keys for similarly spacing the carriage in opposite direction.-

40. In a typewriter the combination of' a continuously rotated driver, an actuator '25 mounted upon and operated by said driver,

key-controlled printing andcarriage-spacing mechanisms operated by said actuator, and a keyboard containing a reverse control key, and means whereby said reverse I Sil-control key while depressed causes the nia.-

chine to space backwards when either the spacing orprinting keys are manipulated. 41. In .a typewriter the combination of a power-driven carriage-spacing mechanism Icontrolled by a space key, a power-driven paper line-spacing mechanism, and a paper control key, and means whereby said' reverse controlv key while depressed transformssaid space key intoa key for con- 4o trolling the paper line-spacing. i

42. AIn .atypewriter the combinatidn of a c power-driven carriage-spacing mechanism vcontrolled by a space key and a feed key for respectively producing single and continuous carriage-spacing, apower-driven paper line-spacing mechanism, and a paper control key, and means whereby said -re- -verse control key while depressed transforms said space and feed key into keys for similarly controlling the paper linespacing. y .43. In a typewriter the combination of a power-driven carriage-spacing mechanism, a. wer-driven paper line-feed mechanism,

b5 a space. key for spacing'said carriage, andkey-controlled means for transforming said space key into a similar key for either carriage back-spacing or paper line-spacing. 44. In a typewriter the` combination of a po'wer-driven marriage-spacingNy mechanism, a. power-driven paper line-feed mechanism,

a space key and a feed key whichv while respectively depressed cause .said carriage- \spacing mechanism to produce single .and continuous spacing,A and .key-controlled means for transformingl said space and` feed keys into. keys-for similarly control` ling either the carriage back-spacing or the v paper line-spacing.

45. In a. typewriter the combination of a power-driven carriage-spacing mechanism, means including a feed key for making said spacing mechanism work. continuously, and a tabulator operated by said feed key.

46. In a typewriter the combination of a continuously rotated driver, an actuator intermittentlyloperated vby said driver. a carriage-spacing mechanism operated by said actuator, means including a feed key for making'the motion of said actuator cont-inuous, a control for making said spacing mechanism inactive during the `motion of said actuator, and a tabulator operated by said feedkey and acting upon said control.

47.(In a typewriter the combination of a continuously rotated driver, an actuator in-A active during the motion of said actuator,

vmarginal stops for operating said control,

and a tabulator to be operated by said feed key' and tofoperate through said control. 49. Ina typewriter the combination of a carriage, a spacing mechanism mounted on afeed-shaft connecting with said carriage, a continuously rotated driver, an independently mounted shaft in line with and operatively connected with said feed-shaft, a frictionwheel on said independent shaft, and keycontrolled means forforcing said friction-` wheel againstsaid driver -for the purpose of returning said carriage by rotating said feed-shaft. j

50. Claim 49 in combination with amargi-v nal stop for releasing said friction at the end of said carriage return. e

51. In a carriage-returnv nism the combination of a rotary driver, a

running mechacarriage, a-inarginal stop, a feed-shaft,. af friction wheel operatively connected with;l

said feed-shaft and normally-out of contact vwith said driver. key-controlled means for revolving said feed-shaft by bringingsaid friction wheel into contact with said driver, means controlled by said marginal stop for (1) releasing said running mechanism :from` its key-control and (2) for bringing a. frictional pressure to bear against. said feedshaft.

52. In a key-controlled power-driven carriage-return runningy mechanism the combi nation of a feed-shaft, a marginal stop. means controlled by said marginal stop for (1) releasing said running mechanism from its key-control before the end of said carriage.

return and (2) for bringing: a 't'rictional' pressure to bear against said feed-shaft.l y

In a typewriter the combination of a key-controlled carriage return running mechanism operated by a continuously rotated driver, and an actuator' intermittently operated by said driver for selectively operating a key-controlled printiiig-mechanism,`a keycontrolled carriage-spacing mechanism, and a key-controlled line-spacing mechanism.

54'. In a typewriter the combination of a key-controlled .power-driven actuator, a. printing mechanism, a. carriage spacing mechanism, a ypaper line-feed mechanism, operative connections between said mechanisms and said actuator, and Selective means for making any 01` all said mechanisms inactive during the motion of said actuator.

55, ln a. typewriter the combination of a key-controlled power-driven Yrockshatt., means for making said rockshaft operate in termittent-ly or continuously'` a -printimgy mechanism, a carriage-spacing mechanism. a paper line-feed mechanism. operative mii- .nectionsI between said mechanisms and said ing the motion of said armed sleeve, means controlled by said armed sleeve While arrested for operating;` said mechanisms. and select-ive means for making' any or all said mechanisms inactive while said armed sleeve is arrested.

Signed by me at Point. Loma, California, February, 1925. v

' oLuF 'rYBERG 

